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Finding the Fourth Proportional to 224.74, 310.20 and 172.27

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Solution

The fourth proportional to 224.74, 310.20 and 172.27 is: 237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.74 : 310.20 = 172.27 : x
  2. Step 2: Convert to fraction form
    224.74/310.20 = 172.27/x
  3. Step 3: Cross multiply
    224.74x = 310.20 × 172.27
  4. Step 4: Simplify right side
    224.74x = 53,438.15
  5. Step 5: Solve for x
    x = 53,438.15/224.74
  6. Step 6: Final answer
    x = 237.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.